Mechanical movement.



G. P. KAHLER.

MECHANICAL MOVEMENT.

APPLICATION FILED APR. 19, [912.

1 1 87,629 Patented June 20, 1916.

3 SHEETS-SHEET I.

witnesses mZI/Q 0C. MJW

IHB COLUMBIA PLANOGRAPH co., WASHINGTON, D. c

- i'mventor v e. P. KAHLER. MECHANICAL MOVEMENT.-

APPLICATION FILED APR 19. 912.

1,187,629. Patented June 20,1916.

3 SHEETSSHEET 2.

Zmbcntor V attorney G. P. KAHLER.

MECHANICAL MOVEMENT- APFLICATlON EILED APR. 19. 1912.

1 ,1 87,629. Patented June 20, 1916.

' 3 SHEETSSHEET 3. 1 1 9915,

3 nvcnfor GOTTLEIB P. KAI-ILER, OF ALVO, NEBRASKA.

MECHANICAL MOVEMENT.

Application filed April 19, 1912. Serial No. 691,862.

To all whom it may concern:

Be it known that I, GoT'rLErn P. KAHLER, a citizen of the United States,residing at Alvo, in the county of Cass and State of Nebraska, haveinvented certain new and useful Improvements in Mechanical Movements, ofwhich the following is a specification.

This invention relates to new and useful improvements in engines.

The primary objects of my invention are, first, to make certainimprovements in engines which will overcome dead centers, so that nomatter where the stroke stops, the piston can always complete thestroke, its leverage being equal at all points; second, to provideimprovements of such a character that the engine is much easier tocontrol and operate, and third, to provide means whereby the power orspeed of the engine, as desired, maybe varied without changing thestroke of the piston, or viceversa.

lVith the foregoing and other objects in view that will appear as thenature of the invention is better understood, the invention consists inthe novel features of construction, combination and arrangement of partsillustrated in the drawings and more particularly pointed out in theappended claim.

In the accompanying drawings: Figure 1 is a side elevation of an engineof the stationary type embodying my improvements. Fig. 2 is a sectionalperspective view of the outer casing, the inner slidably mounted casingand associated parts. Fig. 3 is a lougitudinal section of Fig. 2. Fig.at is a transverse section taken through the line or power shaft thedrum and associated parts. Fig. 5 is a detail perspective view on anenlarged scale over one of the friction grips, and Fig. 6 is a detailsectional view of a modification.

In the embodiment illustrated, 1 indicates the line or power shaft, 2the standards for said shaft, 3 the fly or band wheel on one end of theshaft 1, 4t the base, 5 the piston cylinder, 6 the piston rod, 7' thesteam chest, 8 the stem of the slide valve, 9 the steam pipecommunicating with the steam chest and 10 the hand valve on the steampipe 9.

It is to be understood that the parts above referred to are of anyordinary or approved construction, and for" this reason a more detaileddescription thereof is not deemed necessary.

The improvements comprise a rectangular oblong outer metal frame orcasing 11, which is mounted on the bed frame 4, belng disposedlongitudinally of the piston rod and cylinder, and having a base flange12 by means of which it is bolted or otherwise secured in place. Aninner casing 13 is mounted to slide longitudinally within the outerstationary casing or frame 11, and is provided in opposite side memberswith longitudinal slots 14: to receive the line or power shaft 1. Theside wall 15 of the inner casing 13 is provided near opposite ends witha pair of, outwardly extending lugs or pins 16,.which are disposed inlongitudinal alinement andwork in a longitudinal slot 17 formed in theslide bar 18 which works through and is guided in its movement bycorresponding slots 19 in the end walls 20 of the outer stationarycasing. The inner casing 13 is provided at its bottom and top withlongitudinal racks 21 and 22, respectively, which are disposed atdiagonally opposite corners or opposite sides of the inner casing, andwhich mesh with the teeth of pinions 23 and 24 loosely mounted onopposite ends of the hub 25 of the drum 26 keyed to the power shaft bythe pin 27. An annular series of friction grips 28 and 29 are pivoted attheir inner ends, as at 30, to the rims of the pinions, and are providedat their outer ends with the cam-shaped bearing portions 32, held infrictional contact with the rim of the drum 26 by the coil springs 33.Each series of friction grips alternately operate to grip the rim of thedrum and in this way transmit power to the line shaft, when the pistonis moving in one direction, and to permit the pinion by which saidseries are carried to revolve or turn loosely on the hub of the drumwithout turning the latter when the piston is moving in the oppositedirection. The two series of friction grips are oppositely arranged,thatis, one series acts to grip the rim of the drum and in this waytransmit power to the line shaft when the piston is moving in onedirection, and the other series operating to grip the rim and turn theshaft in the same direction of rotation on theopposite or return strokeof the piston, each series successively gripping and releasing the rimof the drum, whereby a constant uniform force is exerted to rotate thepower shaft always in the same direction.

It will be observed that owing to the ar rangement of the racks andpinions shown, that the greatest amount of leverage is provided intransmitting the power of the piston to the power shaft, and for thisreason it is claimed that by employing my improvements .greater power inengines may be obtained with a given pressure on the piston. Attentionis also invited to the fact that by increasing the size of the pinionsgreater power may be had with a proportionate decrease in the speed, andconversely, by using pinions of a smaller size greater speed may beattained with a proportionate decrease in the power. It will also beobserved that results may be obtained by varying the length of thestroke of the piston without changing any of the parts.

In practice, when the piston is on the return stroke the inner casing 13is moved bodily within the outer casing or frame 11, in the directionindicated by the arrows, under which conditions the rack '21 rotates thepinion 24 in the direction indicated by the arrow in Fig. 3 and saidpinion through the medium of the friction grips 28 held in contact withthe rim of the drum26 by the coil springs 33 rotates the drum in thesame direction which in turn rotates the power shaft, the drum beingkeyed to the shaft by the pin 27. On the forward or opposite stroke ofthe piston the other series of friction grips carried by the. pinion 23are brought into play during which period the pinion 2% turns loosely onthe hub of the drum in an opposite direction. This is made possibleowing to the particular construction of the friction grips. When thecasing 13 is moved in the direction indicated by the arrow in Fig. 3 andis almost at the end of its stroke, the pin 16 at the inner end of thecasing engages the inner end of the slot in the slide bar 18 which movesthe bar a suflicient extent to operate the slide valve, the inner end ofthe slide bar 18 being connected by the link 10 with the upper end ofthe connecting link 11 pivoted on the bearing stud 42 and connected atits lower end with the stem 8 of the slide valve.

The construction and operation of the steam chest and slide valve doesnot need further explanation, as this is well understood by those versedin the art.

As shown in the modification illustrated Gap!" 0! this patent may beobtained for in Fig. 6, the rim of the drum may be pro vided at oppositefaces with ratchet teeth 13 and the pinions with pawls 14: held incontact therewith by the springs a5. 'This arrangement will give thesame results in turning the line or power shaft by the rotation of thedrum as the friction grips heretofore described. 4

From the foregoing description taken in connection with the drawings, itis thought that the construction, operation and many advantages of myimprovements will be clearly understood without requiring a furtherexplanation.

Various changes in the form, proportions and minor details ofconstruction may be resorted to without departing from the principles orsacrificing any of the advantages of this invention as defined in theappended claim.

Having described my invention what I claim as-new is:

A mechanical movement including a re ciprocating element a rotary shaft,and a means for converting the reciprocating movement of thereciprocating element into rotary movement of said shaft, comprising anoblong outer stationary casing having a depending base attaching flange,an inner hollow rectangular oblong casing slidably mounted in the outercasing and connected with said reciprocating element, a drum keyed tothe power shaft within said inner casing, longitudinal racks arranged atthe top and bottom of the inner casing at diagonally opposite cornersthereof, pinions loosely mounted on opposite ends of the hub GOTTLEIB P.KAHLER.

' lVitnesses:

Ross B. SMITH, CLAUDE M. BROBST.

five cents each, by addressing" the Commissioner of Patents. Washington,D. G.

